cxa3541n Sony Electronics, cxa3541n Datasheet
cxa3541n
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cxa3541n Summary of contents
Page 1
... Read/Write Amplifier for GMR-Ind Head Hard Disk Drive Description The CXA3541N is a read/write amplifier for GMR-Ind (Giant Magneto Resistive-Inductive) heads used in hard disk drives, and is capable of supporting up to two channels. Features • +5V and –3V power supply • Current bias voltage sense type • ...
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... WDX WD BUF 4 WDY GND 7 RDY AMP RDX 8 9 FLT/SE/BHV R/ SDEN Bias Current Source Write Current Source AMP DRIVER DRIVER AMP – 2 – CXA3541N R1Y R1X 21 20 W1Y 19 W1X 18 W0X 17 W0Y 16 R0X 15 R0Y CAP ...
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... GND power supply. Ground 100 Read amplifier output with coupling capacitors. High impedance in the write mode. 1.8mA GND Head unsafe detection output. Servo bank write enable input. Buffered head voltage output. GND V EE – 3 – CXA3541N Description ...
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... V EE –3V power supply Connect an external capacitor of read 13 amplifier between this pin and Non connection heads for read. Two channels are provided Inductive heads for write. Two channels are provided. GND V EE – 4 – CXA3541N Description . EE ...
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... Pin Symbol No Equivalent circuit V CC Bias current setting register is connected 250 between this pin and GND. VBGR = 1.3V GND V EE – 5 – CXA3541N Description ...
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... Open collector output V FLTL External resistance = 2.4k Open collector output V FLTH External resistance = 2. – BHV BHV I = "111" – 6 – – 6 – CXA3541N Min. Typ. Max. Unit 2.15 2. 130 ...
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... Tpd Write data to 50% of write current 150nH 3. DAC code = x "0101" Refer to Fig. – 7 – CXA3541N Min. Typ. Max. Unit 82 100 118 V/V 110 135 160 V/V 350 550 kHz 140 200 MHz nV 0.77 0. ...
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... B = 5.9mA (sden) SDEN to first SCLK SU Last SCLK to deassert SDEN Th (sden) f (sclk) Tw (sclk – 8 – CXA3541N Min. Typ. Max. Unit 1.2 1.4 V 0.1 V 0.5 1.8 MHz 300 3.7 3.9 4.1 V 3.9 4.1 4.3 V 200 mV 300 500 ...
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... Active the BHV test point pin. "1" active. IB[2:0] MR bias current set. MROPN 1 = Set MR head open detector active. MRSHT 1 = Set MR head short detector active. IW[3:0] Set write current. DATA4 DATA3 DATA2 XIDL N/A N/A BHV N/A IB2 MRSHT IW3 IW2 Function – 9 – CXA3541N DATA1 DATA0 N/A HS IB1 IB0 IW1 IW0 ...
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... SDATA into an internal shift register on the rising edge of each clock. As SCLK initial condition, both of low and high signal is acceptable. SLEEP XSLP = 0 IDLE XSLP = 1 XIDL = 0 R/ (sclk Serial Port Timing – 10 – CXA3541N WRITE XSLP = 1 XIDL = 1 R/ (sden) D0 ...
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... Read output signal on RDX is negative, when MRX is positive by increasing R 2. Write current flows into X side, when WDX is high and WDY is low. Head Select Table (2ch) HS Normal operation 1.2V) to FLT/SE pin by using the pull-up register – 5 BHV – 11 – CXA3541N = 820 ) ...
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... Actual head current is defined by the following equation /( HEAD Head resistance Damping resistance D I [mA] B 3.0 3.714 4.429 5.143 5.857 6.571 7.286 8.0 Write current IW0 [mA ] 0-P 0 19.5 1 21.5 0 23.5 1 25.5 0 27.5 1 29.5 0 31.5 1 33.5 0 35.5 1 37.5 0 39.5 1 41.5 0 43.5 1 45.5 0 47.5 1 49.5 – 12 – CXA3541N ...
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... S6 6 GND RDY 1000pF 8 RDX V CC 1000pF 2.4k 9 FLT/SE/BHV R/XW V R/XW SDEN S6' S7' VPSRR 0.1 F 3300 H – 13 – CXA3541N 7. R1Y 22 25 R1X 21 20 W1Y 150nH 19 W1X W0X 18 150nH W0Y 17 25 R0X 16 25 R0Y CAP 13 0.1 F ...
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... SCLK SDATA WDX R1Y 22 4 WDY R1X W1Y CC 6 GND 19 W1X 7 RDY W0X 18 8 RDX W0Y 17 9 FLT/SE/BHV R0X 16 10 R/XW R0Y 15 SDEN CAP 13 EE 0.1 F – 14 – CXA3541N ...
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... Power supply voltage 1. 1.02 1.00 0.98 0.96 75.0 3.5 4 Read 170 s Write 30 s with Write Data 50 55 Deviation of bank write current is within – 15 – CXA3541N Normalized bias current vs. Power supply voltage V = – IBn = "100" 4.5 5.0 5.5 6.0 6 – IBn = " ...
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... Normalized write current vs. Power supply voltage 1.04 1.02 1.00 0. –3V EE IWn = "0101" 0.96 3.5 4.0 4.5 5.0 5.5 V [V] CC Normalized write current vs. Ambient temperature 1. 1.02 IWn = "0101" 1.00 0.98 0.96 0.94 75.0 –25.0 Ta – Ambient temperature [ C] Power supply ON/OFF detector threshold voltage vs. Ambient temperature 4.15 4.10 4.05 4.00 3.95 3.90 3.85 6.0 6.5 –25.0 Ta – Ambient temperature [ C] – 16 – CXA3541N = 5V = –3V 0.0 25.0 50.0 75.0 ON OFF OFF ON 0.0 25.0 50.0 75.0 ...
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... A 12 0.65 + 0.1 b=0.22 – 0.05 (0.22) DETAIL B : SOLDER NOTE: Dimension “ ” does not include mold protrusion. PACKAGE STRUCTURE PACKAGE MATERIAL SSOP-24P-L01 LEAD TREATMENT SSOP024-P-0056 LEAD MATERIAL PACKAGE MASS – 17 – CXA3541N + 0.2 1.25 – 0.1 0.1 b=0.22 ± 0.03 DETAIL B : PALLADIUM EPOXY RESIN SOLDER/PALLADIUM PLATING 42/COPPER ALLOY 0.1g Sony Corporation ...